China Announces New Standards for Lithium-Ion Batteries

Lithium-ion batteries, which are used in many areas from smartphones to cameras, from computers to electric cars, are nowadays most efficient are energy sources. Leading the industry in battery manufacturing, China has a new initiative for lithium-ion batteries to promote the transformation and upgrading of the battery industry and technological progress. industry standard published.

In the announcement of the new standards, the authorities stated that companies legally registered and established in China are required to: to provide and applications of advanced technology, energy saving, environmental protection safe and stable their adoption stressed the need. also “Lithium-Ion Battery Industry Specification Requirements (2018 Edition)” and “Temporary Measures for Administration of Lithium-Ion Battery Industry Specification Announcements (2018 Edition)” repealed.

Updated China Lithium-ion battery industry standard terms

Cathode materials form the main component of lithium-ion batteries. The cathode material determines a cell’s energy density, cell voltage and capacity. According to the newly published battery standards, the specific capacity of Lithium iron phosphate is ≥145Ah/kg, while the specific capacity of ternary material is ≥165Ah/kg. In addition, the specific capacity of lithium cobalt is ≥160Ah/kg, and the specific capacity of lithium manganate is ≥115Ah/kg.

The anode materials paired with the cathode materials in lithium-ion batteries are the negative electrode inside the batteries. The anode materials form the charge/discharge cycles. According to the newly published battery standards, the specific capacity of Carbon is ≥335Ah/kg, while the specific capacity of amorphous carbon is ≥250Ah/kg. In addition, the specific capacity of silicon-carbon is ≥420Ah/kg.

Standard features of battery performance:

• Consumer battery energy density ≥230 Wh/kg,
• Battery pack energy density ≥180 Wh/kg,
• Polymer single cell volume energy density ≥500 Wh/L,
• Cycle Life ≥500 times,
• Capacity retention rate ≥80%,
• The energy density of the energy type single cell using ternary materials is ≥210 Wh/kg,
• Energy density of the battery pack ≥150 Wh/kg,
• Energy density of other energy type single cells ≥160 Wh/kg,
• Energy density of the battery pack ≥115 Wh/kg,
• Power density of single battery ≥500 W/kg,
• The power density of the battery pack is ≥350 W/kg,
• Cycle life ≥1000 times and capacity retention rate ≥80%,
• Energy density of energy storage type single battery ≥145Wh/kg,
• The energy density of the battery pack is ≥100Wh/kg,
• Cycle life should be ≥5000 times and capacity retention should be ≥80%.

Conditions that lithium-ion battery companies must meet:

1. Electrode coating of lithium-ion batteries thickness at least 2 µm (micrometer), length should be less than 1 mm (millimeter). It must have electrode drying technology, and the water content control precision Not less than 10 ppm (one millionth). Lithium-ion battery companies pay attention to these features and standard electrode coating properties should be protected.
2. During the injection process, lithium-ion battery companies temperature, humidity and cleaning up should check. Internal short-circuit high voltages after battery installation perceiving should check.
3. Companies can control the open circuit voltage and internal resistance of single cells. In addition, the function of the battery protection plate online should be able to control.